A Comparative Kinetic Study of Acidic Hydrolysis of Wastes Cellulose from Agricultural Derived Biomass

Journal of Applied Sciences and Environmental Management

Agarry, S.E.¹  Ajani, A.O.¹  Agbede, O.O.¹ 

关键词: Agricultural wastes;    cellulose;    acid hydrolysis;    first-order rate kinetics;    activation energy;    Arrhenius equation;   

DOI  :  

学科分类：环境科学（综合）

来源: University of Port Harcourt * Department of Pure and Industrial Chemistry

【 摘 要 】

Bioconversion of agricultural waste products to produce value-added fuels and chemicals offerspotential economical, environmental and strategic advantages over traditional fossil-based products. The kineticsof acid hydrolysis of cellulose isolated from banana skin, cowpea shells, maize stalks and rice husk (agriculturalwaste) were studied at temperature ranging between 70 – 100°C in a stirred conical flask which served as a batchreactor. The effect of acid concentration on cellulose hydrolysis was also investigated. The results showed that therate of hydrolysis by virtue of glucose yield generally increased with increase in temperature and acidconcentration for all the four agricultural wastes used. The experimental data were fitted to integrated first orderrate kinetics and the results obtained suggested a first order rate of glucose formation from four agricultural wastescellulose used. The activation energies estimated from Arrhenius equation are 39.60 KJ/mole, 38.83 KJ/mole,44.37 KJ/mole and 34.29 KJ/mole for banana skin, cowpea shells, maize stalks and rice husk cellulose,respectively. These values suggests the ease with which hydrolysis can occur between the four agricultural wastescellulose.

【 授权许可】

Unknown